EPSG:27291 - NZGD49 / North Island Grid

Attributes


Unit

British yard (Sears 1922)

Scope

Engineering survey, topographic mapping.

Remarks

None

Area of use

New Zealand - North Island.

Data Source: EPSG v11.016 2024-08-31

Datum: New Zealand Geodetic Datum 1949

Coordinate System: cartesian

Projection: New Zealand North Island National Grid

Geodetic CRS: NZGD49

Export

PROJCRS["NZGD49 / North Island Grid",
    BASEGEOGCRS["NZGD49",
        DATUM["New Zealand Geodetic Datum 1949",
            ELLIPSOID["International 1924",6378388,297,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4272]],
    CONVERSION["New Zealand North Island National Grid",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",-39,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",175.5,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",1,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",300000,
            LENGTHUNIT["British yard (Sears 1922)",0.914398414616029],
            ID["EPSG",8806]],
        PARAMETER["False northing",400000,
            LENGTHUNIT["British yard (Sears 1922)",0.914398414616029],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["(E)",east,
            ORDER[1],
            LENGTHUNIT["British yard (Sears 1922)",0.914398414616029]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["British yard (Sears 1922)",0.914398414616029]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping."],
        AREA["New Zealand - North Island."],
        BBOX[-41.67,171.99,-34.1,178.63]],
    ID["EPSG",27291]]
{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "NZGD49 / North Island Grid",
  "base_crs": {
    "name": "NZGD49",
    "datum": {
      "type": "GeodeticReferenceFrame",
      "name": "New Zealand Geodetic Datum 1949",
      "ellipsoid": {
        "name": "International 1924",
        "semi_major_axis": 6378388,
        "inverse_flattening": 297
      }
    },
    "coordinate_system": {
      "subtype": "ellipsoidal",
      "axis": [
        {
          "name": "Geodetic latitude",
          "abbreviation": "Lat",
          "direction": "north",
          "unit": "degree"
        },
        {
          "name": "Geodetic longitude",
          "abbreviation": "Lon",
          "direction": "east",
          "unit": "degree"
        }
      ]
    },
    "id": {
      "authority": "EPSG",
      "code": 4272
    }
  },
  "conversion": {
    "name": "New Zealand North Island National Grid",
    "method": {
      "name": "Transverse Mercator",
      "id": {
        "authority": "EPSG",
        "code": 9807
      }
    },
    "parameters": [
      {
        "name": "Latitude of natural origin",
        "value": -39,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8801
        }
      },
      {
        "name": "Longitude of natural origin",
        "value": 175.5,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8802
        }
      },
      {
        "name": "Scale factor at natural origin",
        "value": 1,
        "unit": "unity",
        "id": {
          "authority": "EPSG",
          "code": 8805
        }
      },
      {
        "name": "False easting",
        "value": 300000,
        "unit": {
          "type": "LinearUnit",
          "name": "British yard (Sears 1922)",
          "conversion_factor": 0.914398414616029
        },
        "id": {
          "authority": "EPSG",
          "code": 8806
        }
      },
      {
        "name": "False northing",
        "value": 400000,
        "unit": {
          "type": "LinearUnit",
          "name": "British yard (Sears 1922)",
          "conversion_factor": 0.914398414616029
        },
        "id": {
          "authority": "EPSG",
          "code": 8807
        }
      }
    ]
  },
  "coordinate_system": {
    "subtype": "Cartesian",
    "axis": [
      {
        "name": "Easting",
        "abbreviation": "E",
        "direction": "east",
        "unit": {
          "type": "LinearUnit",
          "name": "British yard (Sears 1922)",
          "conversion_factor": 0.914398414616029
        }
      },
      {
        "name": "Northing",
        "abbreviation": "N",
        "direction": "north",
        "unit": {
          "type": "LinearUnit",
          "name": "British yard (Sears 1922)",
          "conversion_factor": 0.914398414616029
        }
      }
    ]
  },
  "scope": "Engineering survey, topographic mapping.",
  "area": "New Zealand - North Island.",
  "bbox": {
    "south_latitude": -41.67,
    "west_longitude": 171.99,
    "north_latitude": -34.1,
    "east_longitude": 178.63
  },
  "id": {
    "authority": "EPSG",
    "code": 27291
  }
}
{'crs_wkt': 'PROJCRS["NZGD49 / North Island '
            'Grid",BASEGEOGCRS["NZGD49",DATUM["New Zealand Geodetic Datum '
            '1949",ELLIPSOID["International '
            '1924",6378388,297,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4272]],CONVERSION["New '
            'Zealand North Island National Grid",METHOD["Transverse '
            'Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural '
            'origin",-39,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude '
            'of natural '
            'origin",175.5,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale '
            'factor at natural '
            'origin",1,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False '
            'easting",300000,LENGTHUNIT["British yard (Sears '
            '1922)",0.914398414616029],ID["EPSG",8806]],PARAMETER["False '
            'northing",400000,LENGTHUNIT["British yard (Sears '
            '1922)",0.914398414616029],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["(E)",east,ORDER[1],LENGTHUNIT["British '
            'yard (Sears '
            '1922)",0.914398414616029]],AXIS["(N)",north,ORDER[2],LENGTHUNIT["British '
            'yard (Sears 1922)",0.914398414616029]],USAGE[SCOPE["Engineering '
            'survey, topographic mapping."],AREA["New Zealand - North '
            'Island."],BBOX[-41.67,171.99,-34.1,178.63]],ID["EPSG",27291]]',
 'false_easting': 300000.0,
 'false_northing': 400000.0,
 'geographic_crs_name': 'NZGD49',
 'grid_mapping_name': 'transverse_mercator',
 'horizontal_datum_name': 'New Zealand Geodetic Datum 1949',
 'inverse_flattening': 297.0,
 'latitude_of_projection_origin': -39.0,
 'longitude_of_central_meridian': 175.5,
 'longitude_of_prime_meridian': 0.0,
 'prime_meridian_name': 'Greenwich',
 'projected_crs_name': 'NZGD49 / North Island Grid',
 'reference_ellipsoid_name': 'International 1924',
 'scale_factor_at_central_meridian': 1.0,
 'semi_major_axis': 6378388.0,
 'semi_minor_axis': 6356911.9461279465}